Tricyclo[4.4.1.01,6]undeca-2,4,7,9-tetraene-11,11-dicarbonitrile, C13H8N2, at 150K
β Scribed by Bianchi, R. ;Pilati, T. ;Simonetta, M.
- Book ID
- 114501351
- Publisher
- International Union of Crystallography
- Year
- 1983
- Tongue
- English
- Weight
- 305 KB
- Volume
- 39
- Category
- Article
- ISSN
- 0108-2701
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## Abstract The deformation density and potential have been determined in molecular crystals of tricyclo[4.4.1.0^1,6^]ndecaβ2,4,7,9βtetraeneβ11,11βdicarbonitrile at 150 K from Xβray diffraction measurements. A significant degformation density peak is found near the midβpoind of the the transannular
N. H. Christensen, A n a chem S c a d I( (I%@), Nr. 4, 5. 954-966 2) S. Wki in "Recent Adv-in \*ocyarute wwmlrpy',Chcm Reviews 2 (1977.
An unusual C-C bond length (1.81 A) is observed in a derivative of [ 101 annulrne; a possibility of cocsistence of two different isomers in the same crystal structure is definitely ruled out by a lattice-dynamical analysis of thermal motion.
By the action of LDA bicycloC4.4.llundeca-1(10),2,4,8-tetraen-1 l-one was found to undergo transannular cyclization to form a unique tricyclic hydroxydihydroozulene which cleaves a C-C bond by Cn8s+u2251 electrocyclic process and eventually give 4-methylazulene.